Table 4.24. Fault Tree Symbols - DOE-HDBK-1100-20040073

DOE-HDBK-1100-2004

Table 4.24. Fault Tree Symbols

The output event occurs if and only if all input

AND Gate

events occur.

The output event occurs if any of the input events

OR Gate

occur.

The output event occurs when the input event

INHIBIT Gate

occurs and the inhibit condition or restriction is

satisfied.

The output event occurs when the input event has

DELAY Gate

occurred and the specified time delay has expired.

A fault event that results from the interactions of

INTERMEDIATE

other fault events that are developed through logic

Event

gates such as those defined above.